---
title: "LegacyScrypt"
---

# `LegacyScrypt`

A pure JS implementation of Scrypt for projects that used Lucia v1/v2. For new projects, use [`Scrypt`](/reference/main/Scrypt).

The output hash is a combination of the scrypt hash and the 32-bytes salt, in the format of `<salt>:<hash>`.

## Constructor

```ts
function constructor(options?: { N?: number; r?: number; p?: number; dkLen?: number }): this;
```

### Parameters

-   `options`
    -   `N` (default: `16384`)
    -   `r` (default: `16`)
    -   `p` (default: `1`)
    -   `dkLen` (default: `64`)

## Methods

-   [`hash()`](/reference/main/LegacyScrypt/hash)
-   [`verify()`](/reference/main/LegacyScrypt/verify)

## Example

```ts
import { LegacyScrypt } from "lucia";

const scrypt = new LegacyScrypt();
const hash = await scrypt.hash(password);
const validPassword = await scrypt.verify(hash, password);
```